Coastline Changes in Indramayu Regency Between 1989-2019

Abstract

Basically, coastline changes include accretion (raised soil) and abrasion. This study aims to analyze coastline changes in the Indramayu Regency between 1989 and 2019, as well as the causing factors. The secondary data were obtained from Landsat 5 Satellite Imagery in 1989, 1999, 2009, and Landsat 8 in 2019. This analysis used BILKO method, which is a Landsat image analysis to separate land and sea areas. Then overlay method, which was used to delineate boundary. Spatial analysis showed coastline changes in the Indramayu regency of both accretion and abrasion. In the 1989-1999 period, there was an accretion of 319 ha, while there was an abrasion 1291 ha. Furthermore, in the 1999-2009 period, there was an accretion of 349 ha, and abrasion of 1125 ha. Also, in the 2009-2019 period, there was an accretion of 698 ha, and abrasion of 358 ha. Meanwhile, the factors that cause coastline changes are natural such as wind, waves, currents, as well as human factors such as the conversion of mangrove land to ponds and also planting activities. Therefore, efforts made by the government are making waves containment tool and planting mangrove vegetation.

Dinamika Pemanfaatan Lahan Pesisir Kabupaten Indramayu dengan Pendekatan DPSIR (Driver, Pressures, States, Impact dan Responses)

“…Menurut penelitian Suhardi dan Saraswati (2020), perubahan garis pantai yang signifikan diamati di wilayah pesisir Kabupaten Indramayu selama periode 2009-2019, yang ditentukan dengan mengolah dan menganalisis citra satelit daerah tersebut. Hal ini diperkuat oleh penelitian Kusnanto et al (2022), luas daerah yang terkena abrasi di Kabupaten Indramayu berkisar antara 1.291 ha antara tahun 1989 dan 1999 hingga 1.125 ha antara tahun 1999 dan 2009, dan 358 ha antara tahun 2009 dan 2019. Terdapat 31 lokasi di mana garis pantai mundur atau erosi garis pantai terjadi, dan 24 lokasi di mana perluasan garis pantai atau akresi pantai terjadi.…”

Long Short Term Memory Approach for Shoreline Change Prediction on Eretan Beach

“…Indramayu is one of the districts located on the north coast known as Pantura. The length of the coastal area is around 147 km that stretches from the border of Cirebon to Subang regency [1]. According to the reference, 45.6 km of the coastline undergone abrasion.…”

“…al. as described in detail in [1], Coastlines of Indramayu Regency have still undergone abrasion. The three highest districts that experienced abrasion are Pasekan, Cantigi, and Kandanghaur.…”